Nathaniel Hawthorne, Herman Melville, Julian Hawthorne (2015). “Life and Genius of Nathaniel Hawthorne: Letters, Diaries, Reminiscences and Extensive Biographies: Autobiographical Writings of the Renowned American Novelist, Author of “The Scarlet Letter”, “The House of Seven Gables” and “Twice-Told Tales””, p.371, e-artnow
Henry Tudor (1834). “Narrative of a tour in North America: comprising Mexico, the mines of Real de Monte, the United States, and the British colonies; with an excursion to the island of Cuba. In a series of letters, written in the years 1831-2”, p.233
Herman Melville (2012). “Moby Dick in Plain and Simple English (Includes Study Guide, Complete Unabridged Book, Historical Context, and Character Index)(”, p.561, BookCaps Study Guides